Two Level Playhouse - Are deck blocks going to give me the stability I need?

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Posted by: from Zurich
3/30/2019 at 10:04:37 PM

Looking for advice for the corner posts. Are deck blocks going to give me the stability I need? Should use the pound in anchors for 4x4s. Thanks for your input. I have an idea. But open to yours.

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Kris from Naklo Carpentry in London
Date/Time3/31/2019 at 10:34:40 AM

Hey Jon,

There are a number of factors you need to consider when building a structure with an element of liablity for your childrens/friends safety. In my opinion, neither deck blocks or post spikes are going to be sufficient. I would recommend using a 6x6 post set in a 1ft diameter 4ft deep hole, sitting on a minimum of 1ft of cement in the bottom of the hole. This is only my recommendation as I am not a structural engineer and lack enough project details. The factors you need to consider are whether or not the weight of the structure is going to sink into the ground, and more importantly can a strong wind blow it over.

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Date/Time3/31/2019 at 12:22:34 PM

Jon, Kris is correct if you want to be 100% sure of stability. Having said that, it depends on the structure itself. If the base is wise enough, the structure would be fine on both your suggestions. What you don't want is for the build to be top heavy. Other than that, the type of base(footing) could be either the blocks or spikes as you mentioned. You could also add extra brackets or braces at ground level and drive long spikes into the ground. The key is to make everything safe, not only from movement but also from sharp objects. Common sense should prevail. Have fun.

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Date/Time3/31/2019 at 4:30:19 PM

Hi Jon,

No matter what you're it right.

Check with your local planning, property & development authority (may be called somethjng else).

You'll need to submit drawings but you could likely do them yourself. As long as the structure is drawn out from a side view & any side view with a window or door, you should be ok. All specifications & measurements should be noted on the drawings. If sufficient info is not on the drawings, you will learn the amendments required. Once the drawings are approved, you will get your permit & you're ready to build. You could include blocks in your initial sketch up & as I stated, if they're inadequate, you'll be told at that time.

As mentioned in another reply, the safety of all kids is paramount. You should also inform your house insurance provider with regard to liability coverage should someone get injured and pursue damages.

Things are not always as simple as one may think...

Do it right & protect everyone involved.

Hope this helps and best of luck!

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Date/Time3/31/2019 at 9:17:24 PM

Definitely not. Do not build a two-story playhouse on deck blocks no matter what the span is. You need to go 4 feet down with sonotube & concrete with minimum 4 x 4 pressure treated or 6 by 4 Etc create an easier option for structural support is to call the company and have them install screw piles it's cheaper easier and less work all around.

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